Surgical chair



(No Model.) 4 SheetsSheet 1. A. P. GOULD.

SURGICAL CHAIR.

I Paten ned'Jan. 29, 1889.

INVENTOR! WITNESSES.-

ATTORNEY,

4 Sheets-Sheet 2.

(No Model.)

A. r. GOULD. SURGICAL CHAIR.

Patented Jan. 29, 1889.

WITNESSES A fro/my,

(No Model.) 4 SheetsSheet 3. A. P. GOULD.

SURGICAL CHAIR.

Patented Ja. 29, 1889.

IN mm ATTORNEY,

N. PETERS. Fmmbllw ru hm. Washington. 0.0.

(No Model.) I 4 Shets-Sheet 4. A. P. GOULD.

SURGICAL CHAIR. No. 397,077. Patented Jan. 29, 1889.

. BY W WC ATTORNEY,

UNITED STATES PATENT FFICE.

AARON P. GOULD, OF CANTON, OHIO.

SURGICAL CHAIR.

SPECIFICATION forming part of Letters Patent No. 397,077, dated January 29, 1889.

Application filed December 10, 1887. Serial No. 257,543. (No model.)

T0 to whom it may concern.-

Be it known that I, AARON P. GOULD, a citizen of the United States, and a resident of Canton, county of Stark, State of Ohio, have invented a new and useful Improvement in Surgical Chairs, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, making part of this specification.

My invention .relates to improvements in surgical chairs, and particularly to providing means for raising and lowering the body of the chair vertically, and to rotate and rock said body on the supporting-base.

Vith these ends in view my invention consists in certain features of construction and combinations of parts, as will be hereinafter described, and set forth in the claims.

Figure l is a view in perspective of a surgical chair illustrating my invention. Fig. 2 is same view with the parts detached, comprising the base, vertical slide, circular way, and rotary body-support, and back, seat, and leg-rest frame, which will be hereinafter lettered and explained. Fig. 3 is a view in perspective of parts detached and enlarged, comprising the lifting-lever. Fig. f is a view of parts shown on the under side of the seat, comprising the seat lifting and lowering mechanism and sea-thinge, and means whereby the two parts may be held horizontally parallel. Fig. 5 is a side elevation, and Fig. (i a view in perspective, comprising a section of arm-support, slide, and adjustable cushion-board.

Similar letters of reference indicate corresponding parts in all of the figures of the accompanying drawings.

The base A (see Fig. 1) is formed of two A frames coupled by a strut, a, and having on their inner face vertical grooves a, into which the slides a of frame B are iitted for vertical movement, said frame having lugs a to which the locking-frame a has a pivotal connection, and a downwardly-projected lug, a through which the spring-s11 )porting rod (0 passes, (see Fig. 3,) and against which the ends of the coilsprings a rest, forming a buifer to arrest or prevent a jar when the body of the chair is quickly moved or swung about its pivotal connection with the frame 7 B. To the downwardly-projeeted lug a the upper end of the rack a is pivotally secured, thelower end of the said rack being pivotally secured to the hoisting-lever l, as shown at a There are also provided vertically-projected lugs I), having perforations that corre spond with perforations b in the frame of .the circular way D, for a pivot or bolt, whereby a pivotal connection, a, is formed between the frame 1-3 and the circular way D. The circular body-supporting frame F is pivotally secured to the circular supporting-way D by a bolt passed through the centrally-located perforations U The frame F, as it rests on the circular-way D, is prevented from making an entire revolution thereon by means of lugs d on the way D, which occupy positions in the path of downwardly-projeeted portions 0 of the frame E.

A depending rack-frame, F, is secured to the way D by belts or rivets passed through the perforations b in the way D and h in lugs in upper end of frame F. (See Figs. 3 and 5.)

To raise the frame vertically in the grooves a in the base, a foot-lever, O, is provided, of the form substantially as shown in Fig. 3, and pivotally secured to the strut a, or to the plate I), which is secured to the strut. The foot-lever C is formed of two parallel bars, 1),, joined by the loop-frame b and web 19 A spring-actuated locking-bolt, I), is placed between the bars 19 the inner end passed through the loop b and engaging the rack' a, the outer end pivotally secured to a depending lug c, as shown at 0 integral with a pedal, 0', which is pivotally secured to the outer end of lever Cat 0 The locking-bolt I)", because of its support near one end in the loop 29 and its pivoted connection atits opposite end with the pivoted step c, has a limited endWise movement relatively to the lever C. drawn out of engagement with the rack a by tilting the step, 0 over toward the front of the chair, while a coil-spring, 03, is provided,

as shown, the energy of which is excited to hold the locking-bolt in engagement with the rack a. A coil-spring, a, resting on the outer end of the lever C and under the frame (0 is provided, the energy of which is exerted to hold the lock in engagement with the rack F.

It is' To raise the frame 13 and the body of the chair vertically, the foot is placed on the pedal and by rocking the pedal over its pivotal connection with the end of the lever the locking-bolt U will be disengaged from. the rack a, when the lever may be pressed down, rocking the lever over its pivotal connect-ion with the strut (l, raising the rack a by its pivotal. connection a therewith. The upper end of the rack being pivotally secured to the frame ll, the said frame and the body of the chair may be .raisedaml lowered, the sprin c throwing the bolt b into engagement with the rack when the foot is removed from the pedal.

To rock the body of the chair over the base A on the pivotal connection of the way 1 with the frame 1%, the foot is placed on the pedal c, pressing the locking-frame down, thereby disenga'tging the lock 0 from the rack F, releasing the body of the chair, so that it may be tipped forward or back, and by the use of the locking-frame may be secured in desired adjustment. The springs u resting between the lugs and on the lug a, will prevent the body fall in g violently to ei ther limit of its movement.

The body-supporting frame E may be rotated about its vertical central pivot, resting on the way 1) and fixed in adjustment by a turn-bolt, 0 (Shown in Fig.

The back section, (l, is pivotally secured to and between the upper rear portions of the arm-support ll, and may be vibrated about said pivotal connection 2 and secured in ad,- jnstment by turnin the set-screw [1 against the curved bar (1, said arm having its upper end pivotall y secured to the back section at (1 the free end passed through a loop, (1, at the rear lower owner of the arm-support. H.

An auxiliary rocking frame, (1", by which the seat J maybe raised and lowered, and by which theback section, G, and the seat-se :tion .l are pivotally secured one to the other,which is also a means for locking the back and seat in adjustment, is provided, consisting of an open V-shaped portion, d, and two arms, (1, extending from the V-shaped portion parallel to each other, and is pivotally secured to the sides of the back section near their lower ends and to the sides of the seat-section near their rear ends by suitable bolts or studs, (7 which extend through the arms (1. The V- shaped portion of the frame when in position is located beneath the seat-seri-tion, pointing forward and downwardly. The rock-shaft e is pivotally secured to the start-frame K, the outer end of the shaft terminating in an opcratingoranl ll.

On the under side of the seat .l there is provided a depending latch, e, pivotally seen red to the scat, said latch having a perforation, 0?, adapted to receive the end of an. arm, a, project ing forwardly from the rock-shaft c and through. a perforation, c, in the forward end of rocking frame d", by which the seat may be locked in adjustment. A laterallyprojected handle is provided, by which the latch 6' may be swung olf the end of the bolt or arm c to release the frame (1" and allow the seat to be secured or locked in adj ustmont.

The seat proper is formed of two sections, J and l, each of which is supported by metal frames K K, joined by hinges c and seen red. in horizontal position by a locking-latch, 0", actuated by spring a.

For the purposes of this H1)] )ll(itttl()ll I will treat the seat as a whole, referring to the sections 3' and M. as occasion may require.

The front of the seat is secured. to the front inner face of the aim-support ll at c in a swinging adjustment by means of arms 0*, e",

I and f,pivotally secured to each other,as shown.

The foot and leg rest section N is hinged to the seat-seetiim M by means of owner-extensions, f, formed with elongated apertures f which embrace the pivot-bolts f. The extensions f, after passing the bolts or pins are bent at right angles and extend rearwardly a short distance, terminating in open hooks f adapted to receive short studs on the inner face of the swinging arm f. The apertures f are sufficiently elongated to admit the extension f to move upwardly enough to free the hooksf' from the studs and allow the leg and foot rest to depend in a free swinging motion from the bolts 01." pins f but when the hooks are engaged with the studs the leg and foot rest section will be subject to such movement or changes as are determined by the combined action of the arms 6 e-',and f.

For the. purpose of holding the feet of the patient in suitable position for certain classes of operations, stirrups O are provided and adapted for adj ustment by a clamp, P, secured to the arm-support H, by which the stirrups may be adjusted and locked in any desired vertical or angular adj ustment, and as a further convenience, by releasing the latch on the under side of the seat the front section, M, and the leg-rest N may be dropped to .position shown in Fig. and again raised to support the patient by raising the leg-rest up, the latch e locking the seat-section in horizontal positioinas shown in Fig. 1.

To provide for an adjustment or extension of the army R, a metal plate, 8, is provided, having an upwardly-projected rib, g, and slots g, through which a bolt, g is passed, by which the plate 5 is pivotally secured to the armsnpport ll. An npwardly-projected lug, g, on the (\J'ITI-SHPDOXUll is adapted to guide the plate S when moved forward and back on the arm-sup wrt ll. A board, T, which is upholstered, is pivotally secured to the plate S by bolt g and perforati on g", on which it may rotate for the purpose of bringing the upholstered portion of the arm It in any desired po- Sition.

A chair constructed as hereinbefore de' scril.)ed maybe operated as follows: Presumingthe chair to be in. normal position, 113' now the curved arm d be released and the back section, 9, pressed backward and down, pivoting over the pivotal connection .2 with the arm-support ll, the seat and leg-rest sections may be raised to a horizontal plane, with the back section as shown in Fig. 1, the lower end of the back section swinging forward and up, carrying the seat with it. This movement of the seat-section J will also, by the combined action of the arms 6 e, and f and the bent extensions f, with their hooks f engaged with the studsf on the arm f, elevate the leg and foot rest N, in which adjustment the several parts may be secured by tightening the seatscrew (Z, or in any degree of adjustment or inclination within the limits of vibration. lVhen so adjusted, the body of the chair may be tipped or rocked over its pivotal connection with the frame l) by placing the foot on pedal a, pressing down frame a, disengaging the lock 2 from the rack F, and rocking or tipping the body on the said pivotal connection, and it may be fixed in adjustment by the lock.

The body of the chair may be rotated horizontally about its central pivot, 11 the frame E resting on the way D, and be locked in adjustment by the set-screw c", or be turned sidewise across the base parallel with the face of the frame 13 and rocked about in said adjustment by the locking-frame and lock 6.

By the construction hereinbefore described a broad and more permanent base for the body of the chair to rotate upon is secured. In the use of the circular way D and the circular body-support E, the locking mechanism being at a greater distance from the center of rotation, the parts maybe secured against vibration.

By the arrangement of the open frame 1- sliding vertically in the grooves in the inner face of the base the lifting mechanism may be placed about centrally under the body of the chair, the lifting and locking mechanism rising and fallin g with the frame B and the short end of the lever O.

Having thus described the nature and 0bjcct of my invention, what I claim, and desire to secure by Letters Patent, is-' 1. The combination,in a surgical chair, of a base, A, a frame, 13, secured in said base and having a vertically-reciprocating movement, a circular way pivotally secured to said frame, a bod y-support frame having a circular base resting upon and pivotally secured to said way, a locking-rack dependin from said way, and a lock pivotally secured to the frame B and adapted to engage the rack at any desired point of adjustment, substantially as set forth.

2. In a chair, the combination of a base, A, a frame, B, secured to said base and having a vertically-reciprocating movement, a circular way pivotally secured to said frame, a body-supporting frame having a circular base pivotally secured to and resting upon the circular way, up wardly-proj ected arms, a back pivoted to said arms, a seat-section secured to said arms by pivoted links, devices for swinging said back and seat sections into backwardly and upwardly tilting positions about the axis of the pivotal connection, and devices for locking said back and seat sections in their several adjustments and for locking the body-supporting frame against rotation, substantially as set forth.

3. The combination, in a chair, of a base, A, a frame, B, secured in said base and having a vertical]y-reciprocating movement, devices in connection with the base A and frame B for raising and lowering said frame and looking it in any desired adjustment, a circular way supported by and pivotally sccured to the said frame 1), to tilt in a plane vertical to that of the way, a body-supporting frame having a circular base adapted to rest and rotate upon said circular way and provid ed with upwardly-proj ecting arms, a back pivoted to said arms, and a seat-section hinged to the back and secured to said arms by pivoted links, substantially as set forth.

l. The combination, with a chair-base and a supportingframe having a vertically-reciprocating movement in said base, of a combined lifting and lowering foot-lever pivoted to the base, a rack pivoted to said lever and connecting the lever with the reciprocating frame, a locking-bolt carried by the said lever, and a rocking part connected with the footlever and locking-bolt, whereby the latter is directly subject to the same impulse which operates the lever, substantially as set forth.

5. The combination, with a chair-base and a supporting-frame having a vertically-reciprocating movement in said base, of a footlever, a segmental rack connecting the footlever and reciprocating frame, and a lockingbolt having a lengthwise movement relatively to the lever to engage and disengage the said rack and subject to be operated simultaneously therewith, substantially as set forth.

6. The combination, with a chair-base and a supporting-frame having a vertically-reciprocating movement in said base, of a footlever, a segmental connection between the foot-lever and vibrating frame, the segmental connection being provided with seats for a locking-bolt and the foot-lever being pivoted to the connection at the center of its segmental arc, a locking-bolt having a movement lengthwise of the lever, and 'a rocking step connecting the lever and the locking-bolt, substantially as set forth.

7, The combination, in a chair, of a base, A, a frame, B, secured in the said base and having a vertically-reciprocatii1g movement, a circular way pivotally secured to said frame, a chair-body turning on said circular way, and springs, one end of each resting against the frame B and the otheragainst a rack depending from the said way, substantially as set forth.

9. The conlliiimtimnin aelmir, 0f :1 bflSLgA, In testimony whereof I have hereunto Sci: a frame, 13, secured in said base andha'ving' nyhzmd this 23d, day of November, A. D.

a mri'ical IDOVUIIHHt therein, av 'lmdy-snpport- 1887.

ing frame pivomily SOOUI'Od to mid frmno B, AARON P. GOULD. and springs, one (-n(l 011' nch resting against \\"'ii'n0sscs: Hm irzunn ,13 and H10 other against the hmly- I \V. k. MILLER,

snppnriing Fmnnynnima niiaflly as not lorih. CHAS. H. MILLER. 

